Casella CEL DryCal DC-Lite flow calibrator User Manual

Bios International Corporation

10 Park Place

Butler, New Jersey, USA 07405

Phone [phone]

Toll Free [phone]

Fax [phone]

Email sales

@biosint.com

Web www.biosint.com

© 2003 • Bios International Corporation

MK01-1 Rev. C 1.09

DryCal®DC-Lite Manual

Table of Contents

1.0 DC-Lite Features 2

2.0 Unpacking Checklist 3

3.0 General Description 3

4.0 Theory of Operation 3–4

5.0 Operating Instructions 4

5.1 DC-Lite Button Panel 4

5.2 Turning the Power On 5

5.3 Disabling & Re-Enabling the 5-Minute Auto-Shutoff Feature 5

5.4 Taking Readings 5–6

5.5 Resetting the Averaging Sequence 6

5.6 Printing 6–7

5.7 Stop & Reset 7

5.8 Resetting a Printed Sequence 7

5.9 Printing to a PC 8

5.10 Hard Reset Button 8

6.0 Battery System 8

6.1 Charging the Battery 9

6.2 Battery Maintenance & Storage 9

7.0 Isolating the DryCal from Other Instruments 9–10

7.1 Use with Instruments that Contain Internal

Mass Flow Controllers (MFCs) 10

7.2 Use with Personal Air Samplers 10

7.3 Calibrating Rotameters 10

7.4 Use with Magnehelic Manometers 10–11

8.0 Maintenance, Quality Assurance 11

8.1 Maintenance 11

8.2 Leak-Test Procedure 11–12

8.3 Air Containing Particulates 12

8.4 Return Authorization 12

8.5 Shipment 12

8.6 Long-Term Storage 12–13

8.7 Calibration 13

9.0 Calibration Statement 13–14

10.0 Limited Warranty 14

DryCal®DC-Lite Specifications

Size 5" x 5" x 2.75" • 127 mm x 127 mm x 70 mm

Weight 42 oz • 1200 g

Flow Ranges | Air Flow Accuracy Specifications based on averaged readings.

Lower limit is based on self-tested maximum leakage.

Model Optimum Flow Range (±1%) Extended Flow Range

L 10–500 ml/min 1 ml/min–500 ml/min

ML 50 ml/min–2 L/min 5 ml/min–5 L/min

M 100 ml/min–7 L/min 10 ml/min–12 L/min

MH 200 ml/min–20 L/min 20 ml/min –20 L/min

H 500 ml/min–30 L/min 50 ml/min–30 L/min

Contact Bios for extended flow range specifications, or visit our website

at www.biosint.com/products/dclite_models.htm

Battery System 6V rechargeable, sealed lead-acid, 6-8 hours typical operation

AC Battery Charger | Power Adapter Wall-mounted, single-station charge,

input: 100 to 120 VAC, 60 Hz., output: 12 VDC. Optional input: 200 to 240 VAC,

50 Hz., output 12 VDC.

Operating Modes Single reading, 10 readings, or auto-mode.

Temperature Range 0–55 °C

Humidity Range 0–70% non-condensing

Printer Port Standard parallel (Not compatible with printers that require

Microsoft

®

Windows™)

Warranty Product, 1 year; battery, 6 months

The annual recalibration program offered by Bios is elective and is not included

as a warranty item. All specifications are subject to change.

Please contact Bios or visit our web site at www.biosint.com for the most

current information.

2.0 Unpacking Checklist

Your DryCal DC-Lite has been packaged with care and includes all components

necessary for operation. Please take a moment to check that you have received

the following items. If you believe you have not received a full shipment or have

any other questions, please contact Bios immediately.

Your DryCal DC-Lite Includes

• Single-Station Battery Charger

• Tubing Kit

• Additional High Flow Tubing (with DCL-MH and DCL-H only)

• Certificate of Calibration

• Instruction Manual

• Registration Card

3.0 General Description

The DryCal DC-Lite is a field-portable primary flow calibrator used for industrial

hygiene, environmental and laboratory flow measurement applications.

The DC-Lite uses patented dry piston technology and infrared sensors to obtain

volumetric flow rates quickly and accurately.

Housed in a small, sturdy case, each unit employs a variety of popular user con-

veniences such as push-button read and auto-read functions, a large alphanumeric

display, battery level indicator, 5-minute automatic shut-off and a parallel printer

port for data-logging.

4.0 Theory of Operation

The DryCal DC-Lite can be used to measure air flow rates for either a vacuum flow

source (connected to the outlet port) or a pressure flow source (connected to the

inlet port). Before a reading is initiated, or between readings, a computer-directed

valve performs a bypass function. This allows the air to pass through the DryCal

valve, bypassing the flow-measuring cell which is then able to reset.

As a reading is initiated (by pressing the Read button) the internal valve closes

and the flow source evacuates or pressurizes the air in the flow-measuring cell. The

piston rises at the rate of evacuation or pressurization. A precision encoder system

provides two finely collimated light beams with a known distance between the

beams.

After a suitable acceleration interval the piston breaks the first infrared light beams

as it passes. The flow reading is completed when the second infrared beam

3

2

1.0 DC-Lite Features

Front and Side

Back and Side

Cell Viewing Window

Charging Jack

Inlet Port

Connect tubing here for
pressure applications

Outlet Port

Connect tubing here for
suction applications

Parallel Printer Port

Reset Button